Yu Xi Chau / Interactive project

Slide Rule
Browser-native · no calculator

Logarithmic computing

Move the rule.
Read the answer.

A quick, tactile virtual slide rule for multiplication, division and a little mechanical nostalgia. Drag the slide or cursor, then use the keyboard for fine control.

10-inch virtual ruleClick the slide or cursor, then use ← →
C
D
A
B
Slide position1.00 ×
Cursor reading1.00
Drag slide or cursor with the mouse← → fine · Shift + arrow fast · Alt + arrow very fastLog scales show 1–10

This is an instrument, not an electronic calculator. The scale is intentionally honest about the approximate readings a real slide rule gives you. It is built as a lightweight, dependency-free browser artifact.